Flexible U-shaped nail file



FIG. 1 is a front view of a handle for a nail file showing my new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a top view thereof; and,

FIG. 5 is a rear and left side perective view showing my design with an abrasive pad attached, the broken lines showing the abrasive pad being for illutrative puroses only and forming no part of the claimed design. 

The ornamental design for a flexible U-shaped handle for a nail file, as shown and described. 